cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A291535 Expansion of the series reversion of x*(1 + 2*x)/(1 - x - x^2).

Table of values

n a(n)
1 1
2 -3
3 14
4 -82
5 541
6 -3833
7 28479
8 -218927
9 1726651
10 -13893013
11 113594944
12 -941109972
13 7883133111
14 -66651214993
15 568062130934
16 -4875322862342
17 42097583306171
18 -365467693020273
19 3188024056471074
20 -27929166139563662
21 245625484632281831
22 -2167751159576883103
23 19192382951736683739

List of values

[1, -3, 14, -82, 541, -3833, 28479, -218927, 1726651, -13893013, 113594944, -941109972, 7883133111, -66651214993, 568062130934, -4875322862342, 42097583306171, -365467693020273, 3188024056471074, -27929166139563662, 245625484632281831, -2167751159576883103, 19192382951736683739]